Illumination unit and image projection apparatus having the same

(19)

(11)

EP 1 718 084 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	11.03.2009 Bulletin 2009/11

(43)	Date of publication A2:
	02.11.2006 Bulletin 2006/44

(21)	Application number: 06252177.8

(22)	Date of filing: 21.04.2006

(51)

International Patent Classification (IPC):

G02B 27/09^(2006.01)

H04N 9/31^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

(30)

Priority:

25.04.2005 KR 20050034158

(71)	Applicant: Samsung Electronics Co., Ltd.
	Suwon-si, Gyeonggi-do 442-743 (KR)

(72)	Inventors:
	Lee, Kye-hoon Suwon-si Gyeonggi-do (KR) Lee, Won-yong Yeongtong-gu Suwon-si Gyeonggi-do (KR) Lee, Young-chol Gunpo-si Gyeonggi-do (KR)

(74)	Representative: Sherrard-Smith, Hugh et al
	Appleyard Lees 15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)

(54)	Illumination unit and image projection apparatus having the same

(57) An illumination unit and an image projection apparatus having the same are provided. The illumination unit includes: at least one light source unit which radiates a collimated light beam; an optical integrator which converts the collimated light beam from the at least one light source unit into a uniform light beam; and a condensing lens system, disposed between the at least one light source unit and the optical integrator, which reduces a cross-section of the collimated light beam emitted from the at least one light source unit and then guides the collimated light beam with the reduced cross-section to the optical integrator and has a 1:1 conjugate property between an object and an image of the object.

Search report